javascript - 服务 worker 的推送事件未被调用

Question

我正在尝试接收来自 GCM 的推送消息。我只是简单地按照教程注册了 Service Worker，如下所示:-

      function urlB64ToUint8Array(base64String) {
      const padding = '='.repeat((4 - base64String.length % 4) % 4);
      const base64 = (base64String + padding)
        .replace(/\-/g, '+')
        .replace(/_/g, '/');

      const rawData = window.atob(base64);
      const outputArray = new Uint8Array(rawData.length);

      for (let i = 0; i < rawData.length; ++i) {
        outputArray[i] = rawData.charCodeAt(i);
      }
      return outputArray;
    }
    var subscribeForPush = function() {
        navigator.serviceWorker.ready.then(function(serviceWorkerRegistration) {
            serviceWorkerRegistration.pushManager.subscribe({
                    userVisibleOnly: true,
                    applicationServerKey : urlB64ToUint8Array('<API-KEY>')
                })
                .then(function(subscription) {
                    console.log("Subscription for Push successful: ", subscription);
                })
                .catch(function(error) {
                    console.log("Subscription for Push failed", error);
                });
        });
    };
    if ('serviceWorker' in navigator) {
          window.addEventListener('load', function() {
            navigator.serviceWorker.register('/sw.js').then(function(registration) {
              // Registration was successful
              console.log('ServiceWorker registration successful with scope: ', registration.scope);
              subscribeForPush();
            }).catch(function(err) {
              // registration failed :(
              console.log('ServiceWorker registration failed: ', err);
            });
        });
    }

Now, I get the device Id ("cw4jK8NhJgY:APA91bHr64E_kSdh7kN_VjcZRKulPf8KPLJLBjtnHI2qkYzx3-I9aUhunjzVcJjLtkHl9zvN8ys80gADK8tV8SueLX1R2jS0xgrf1Ur6cDw3jNjloUJp8PtWaIN-cEKXj69TZ9-D2Hiw")

来自网址:-“https://android.googleapis.com/gcm/send/cw4jK8NhJgY:APA91bHr64E_kSdh7kN_VjcZRKulPf8KPLJLBjtnHI2qkYzx3-I9aUhunjzVcJjLtkHl9zvN8ys80gADK8tV8SueLX1R2jS0xgrf1Ur6cDw3jNjloUJp8PtWaIN-cEKXj69TZ9-D2Hiw”

在我的 service worker 文件中，我只是简单地听取如下推送消息:-

     self.addEventListener('push', function(event) {  
          console.log(event)
      });

我可以使用终端向 gcm 发送消息并获取消息:-

   {"multicast_id":4983340130324592129,"success":1,"failure":0,"canonical_ids":0,"results":[{"message_id":"0:1483043226210433%cc9b4facf9fd7ecd"}]}

但我不知道为什么在推送监听器中看不到日志？我被困在这个问题上超过 2 天了。有人可以在这里帮助我吗？我在本地主机上执行此操作。

Answer 1

您没有返回 pushManager 订阅

navigator.serviceWorker.ready.then(function(serviceWorkerRegistration) {
    return serviceWorkerRegistration.pushManager.subscribe({
        'userVisibleOnly': true
}).then(function(subscription) {
        if (!subscription) {
            // Set appropriate app states.
            return;
        }
        console.log(subscription.endpoint);

    }).catch(function (err) {
        console.log('error in subcription .. '+ err);
    });

})

查看我的github项目https://github.com/bvakiti/bvakiti.github.io/blob/master/app.js

如果您需要任何详细信息，请告诉我